Yokogawa AAI835-H53 Analog Input/Output Module

Overview

The Yokogawa AAI835-H53 is a 16-channel differential analog input/output module. It integrates smoothly with CENTUM VP and CS 3000 DCS platforms. This module supports high-density analog signal processing with precise 16-bit resolution. Engineers benefit from advanced signal conditioning and diagnostics for enhanced reliability. It operates efficiently in demanding and noisy industrial environments. Moreover, it complies with SIL3 safety standards for critical applications.

Technical Specifications

• Model: AAI835-H53

• Channels: 16 differential analog I/O channels

• Input Range: ±10 V

• Output Range: 0–20 mA

• Resolution: 16-bit

• Signal Processing: Includes advanced filtering and built-in diagnostics

• SIL Level: SIL3 compliant

• Isolation: Channel-to-channel and channel-to-system isolation

• Mounting Options: DIN rail or panel mount

• System Compatibility: Designed for Yokogawa CENTUM series DCS

• Operating Temperature: –20°C to +70°C

• Power Supply: 5 V DC and 24 V DC (via base module)

• Weight: 0.3 kg

I/O Signal Specifications

• Number of I/O Channels: 4 isolated input and 4 isolated output channels

• Input Signal Type: 4–20 mA DC

• Output Signal Type: 4–20 mA DC

• Allowable Input Current: Up to 25 mA

• Allowable Output Load Resistance: 0 to 750 Ω

Electrical Characteristics

• Withstanding Voltage:

• 500 V AC (1 min) between input/output and system

• 500 V AC (1 min) between input/output channels

• Input Resistance:

• Power ON: 290 Ω (20 mA) to 450 Ω (4 mA)

• Power OFF: 500 kΩ or higher

• Open Circuit Detection (Input): Activates below 0.65 mA

Performance Specifications

• Input Accuracy: ±16 μA

• Output Accuracy: ±48 μA

• Temperature Drift: ±16 μA per 10°C

• Data Update Period: 10 ms

• Transmitter Power Supply:

• Minimum: 15.0 V (at 20 mA)

• Maximum: 29.3 V (at 0 mA)

Power Consumption

• 5 V DC Input: Up to 360 mA

• 24 V DC Input: Up to 450 mA